Circuit closer



July 27 1926.

C. L. T. ABALSAMO CIRCUIT CLOSER Filed Nov. 6, 1924 FIGQ.

CanZos Luis 7Z-mas Allsamo FlGi.

Patented July I 27, 1926.

UNITED STATES CARLOS LUIS 'roMAs ABALsAivro,

OF BUENOS AIRES, ARGENTINA..

CIRCUIT CLOSER.

Application filed November 6, 1924, Serial No. 748,213, and in Argentina May 2, 1924.

My present invention relates to certain improvements in means for closing electric circuits by the action of bodies having a vertical movement, its main object being to provide a very simple method which in answer to the oscillation of a body allows the closing and opening of electric circuits, or the automatic switching thereof.

My invention also relates to the application of the above method to the lighting and extinguishing of indicating incandescent lamps, particularly in connection with scales, of any type.

In order that my present invention may be clearly understood and easily carried into practice a preferred embodiment has been shown in the appended schematical drawings, wherein:

Figure 1 shows one of the possible ways of carrying into practice my present invention and Figure 2 shows the application thereof to a scale.

Similar characters of reference denote same or like parts throughout the said drawings. 1

According to my present invention, the closing and opening of the circuit is effected by means of a rod having a vertical oscillutory movement, which rod may be operated by any suitable means, and work within a tube of conducting materialhaving sections, totally insulated from each other and each corresponding to the terminal of a line, the contact between the oscillating rod and the inner walls of the tube being effected by means of a ball or conducting material which rests on the upper end of the said rod.

In the embodiment of Figure 1, a tube is shown having annular sections'l, 2 and 3 of conducting material said sections being electrically insulated from each other and having terminals l, 5 and 6 whicheorrespond to a like number of electric circuits. 7 is a ball of conducting material which rests upon the conical upper end 9 of a rod 8 capable of vertical oscillatory movement within said tube. One of the terminals of the line is fixed to the said rod 8, whereby it will be obvious that when the ball 7 contacts with one or the other of the conducting rings 1, 2 or 3, the electric circuit corresponding to the terminal 4, 5 or 6 respectively will be closed and the remaining circuits will be open, as clearly shown in the positions 7 and'7. If one or more lamps are included 1n each of the said circuits, it is also obvious that the lighting and extinguishing of the said lamps will correspond to the oscillatory movements of the rod 8. It said rod is suitably linked with any oscillating part of a scale it will be also obvious that the lighting and extinguishing [of the said lamps will correspond to the ing to want or .QXCGSS of weight upon the dish of the scale.

Figure 2 shows a second embodiment in which a number of tubes and rods are used, so as to allow a simultaneous lighting of the lamps and t avoid useless sparking.

11, 12, 13 and 14 are rods which spend to rod 8 in Figure 1, said rods being connected by means of a bar 10, of conducting material, said ba-r being operated by any suitable element of scale having an oscillatory movement. 15 is a tube of conducting material having a terminal 16 and within which a ball 1'? works. 18 is a sec- 0nd tube the lower part of which is of con ducting material, and the upper part 19 being of insulating material, said tube carrying a terminal 20 and a ball 21 working therein. Corresponding to the rod 13 there is another tube the central part 23 of which is or conducting material, the ends 22 and 22 being of insulating material while the part has a terminal 25 and a ball 24: within the tube. Corresponding to the rod 1 1 there is a tube 2? of conducting material in the upper end and insulating material 26 at the lower end. the part having a terminal 28 and a ball 29 within the tube.

To the terminals 20, 25 and 28 therearc respectively fixed the ends of the wires 30, 31 and 32 which pass through a common board 33 and which correspond to one of the terminals of the lamps 34, 35 and 36 respectively, the other terminal of said lamps being connected to the wire 37 which passes to one of the contacts 38 of a switch 89 the arm $2 of which is pivoted at a l upon the other contact 40, the contacts being normally closed at 43 through the action of a spring 14.

A handle 15 or any other suitable means allows an easy working of the said switch.

The contacts of the tubes are so arranged that the contact corresponds to the fair position oi the scale, whereas the contacts 18 and 2? respectively correspond to want or excess oi weight upon. the dish of the scale. With such arrangement it is obvious that the lighting; of the lamps will. he eti ected according to the position of said dish, the lamp 35 corresponding to the fair or exact weight position oi the scale and the lamps 3t and 36 t0 the positions of want and excess of weight respectively.

The. switch 39 may be so arrange-d that the counterweight 46 of the lever on being brought to the Zero position acts upon it. so as to extinguish all lamps when the scale is not working. A like result may be obtained by the elimination of the switch when the lower portion oi the tube 15 is made of insulating material, so that when the scale is at Zero, the ball 17 will not be in contact with a conducting portion of the said tube.

t? is the rotary foot of the scale.

In the embodiment shown the current enters through the bracket a8 on which there are insulated terminals 49 and 50 which are screwed into the tubes 51 and communicate vith the conducting pieces 52 pressed by means of springs 53 against the conducting rings 5% and The rings are lined by screws 56 and 58 having terminal nuts 5? and 59 between discs of insulating material and 60. The entire device just described turns together with the scale. The wires and 63 pass through a bushing 61 and are connected the first to the terminal 57 and the terminal 16 of tube 15 while the second connected to the terminal 59 and the contact l0 of the switch.

The working is obvious and does not require any further explanation.

It is obvious that many constructional and other changes may be introducml without departing from the scope of my present invention, which has been clearly set forth in the appended claiming clauses.

Having now fully described and ascertained the nature of my present invention and in what manner the same is to be carried into practice, I declare that what I claim is l. A circuit closer comprising a tube having sections of conducting and insulating naterial; a ball of conducting material in said tube; and a rod capable of movement in said tube for moving said ball vertically in order to close a circuit through the section o1 conducting material in the tube and the rod by means of the ball.

2. A circuit closer comprising; a tube having sections of conducting and insulating material; a ball of conducting; material. in said tube; and a r d having a conical upper end which is adapted to more vertically in said tube and to move said ball vertically in order to close a circuit through the section of conducting material in. the tube and the rod by means of the ball, said ball being maintained along the sides of the. tube means of the conical upper end of said rod.

In testimony whereof I afliz: my signature.

' CARLOS LUIS Tomas ABALsAi/io. 

